Ventilator



O. A. BARBER May 3% W50 VENTILATOR Filed Oct. 1'. 1946 INVEN TOR.

A. Ember Opcri mforney Patented May 30, 1950 UNITED STATES PATENT GFFICE VENTILATOR Opal A. Barber, Oklahoma. City, Okla.

Application October 1, 1946, Serial No. 700,491

2 Claims. 1

My invention relates to a ventilator for dwellings, office buildings, barns, stables, and houses in general needing proper ventilation and outlet for stale air, delivered from the roof into the open air. This invention is more efiicient than ordinary ones now in general use.

This ventilator is of very simple construction and, as a consequence, can be manufactured at low cost of inexpensive material now available.

One object of the invention is to create suction action from the outside air to aid in drawing out air passing through the ventilator from the room or building where the device has been set up.

For this purpose the hood, which is of the general elbow shape now in use for this type of ventilator and set in the wind direction by a vane, is provided with an adjunct on the wind-side of the hood in order to lead the exterior air from the rear, above and around it to the front or exit of the hood, thereby creating a partial vacuum at the hood nozzle to increase the speed of the air current drawn from the inside of the building.

With these and other objects in mind, the invention will be understood from the following description with the aid of the attached drawing showing one embodiment of the invention.

Figure 1 is a side elevation of the ventilator;

Figure 2 is a front elevation of Figure 1; and

Figure 3 is a vertical section taken on a plane along line 3-3 of Figure 2.

In the drawing, like reference numerals relate to the same details in the different views.

Reference numeral I denotes the roof of a building upon which the ventilator is erected.

A vent base I I is positioned in a suitable place on the roof. This base has the shape of a conic frustum with bottom flange I2 bolted down tightly on the roof over the air vent in order to conduct the air current out through the elbow shaped hood I3 and its nozzle I4 in the direction of arrow X. The hood I3 is of elbow shape and preferably cylindrical, with its nozzle cut backward, slantingly against its horizontal axis thus forming an elbow with its vertical skirt I 5, fitting around the cylindrical top I6 of the base I I.

The entire hood I3 is supported on an axial, vertical, hollow shaft H, which is rigidly secured to the horizontal portion of the hood as by braces I8. The shaft I'I seats in a socket bearing l9 resting on a ball bearing and running in oil supplied through the hollow shaft H from the cup 2| at the top thereof.

The socket bearing I9 has the form of a deep cup which is secured in the cylindrical top I6 as by braces 22. Thus the entire weight of the ventilator hood is supported on a ball bearing 20 in the socket I9.

At is shown a vane which is secured on top of the hood I3 by stays 26 in the vertical plane of the axis thereof.

Lastly, but of great importance is the bullet nose 27 which is of conical shape and attached on the rear or wind-side end of the horizontal top portion of the ventilator hood I3 and in axial alignment therewith. The base of this cone or bullet nose is of the same diameter as that of the horizontal hood top portion I3, so that air current hitting said cone, becomes deflected to follow the top and sides of the hood, and when reaching the nozzle, causes suction, aiding in withdrawing air from the vent base I I.

The rear wall 28 of the horizontal portion of the hood I3 is arched to provide a smooth path for the outgoing air, without obstructions chan ing from vertical to horizontal direction.

It is to be understood that the invention as herein disclosed may be varied from the details described and shown without departure from the spirit of the subjoined claims.

What is claimed is:

l. A ventilator comprising a hollow conical base. a cylindrical extension rising from the top end of said base, an elbow having one of its legs seated over the top end of said extension, a tubular bearing centered within said extension and having a closed rounded lower end, a spider mounted within the tubular extension and supporting said bearing in place, a shaft seated in and. rising from said bearing and having its top end secured at the top of said elbow, a vane rising from the top side of the horizontal leg of said elbow, a cylindrical member extending from said elbow in line with and opposite from said horizontal leg, said cylindrical member having the same outside diameter as said leg, and a conical cap closing the outer end of said cylindrical member.

2. The invention as defined in claim 1 wherein said shaft is hollow and comprises a length of metal tubing and having its top end passed through the top sides of said elbow and said cylindrical member and outwardly flared into enagement with the wall of the latter, and a ball seated within the lower end of said bearing and supporting the lower end of said shaft, said shaft being adapted to receive a lubricant in its top end to convey the same to said bearing.

OPAL A. BARBER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 181,050 Davies Aug. 15, 1876 260,564 Hahn July 4, 1882 458,894 Gardner Sept. 1, 1891 647,721 Highley Apr. 17, 1900 757,534 Withers Apr. 19, 1904 864,267 Samuel Aug. 27, 1907 1,256,917 MacWilliams Feb. 19, 1918 1,309,037 Lichty et a1 July 8, 1919 1,407,179 Tidwell Feb. 21, 1922 1,486,916 Novy Mar. 18, 1924.- 2,163,197 Fitzgerald June 20, 1939 

